Clearing Your DNS Cache 

Your DNS cache stores the locations (IP addresses) of pages you have recently viewed. If the location of the page changes before the entry in your DNS cache is updated, you will be unable to access the page. 

The methods detailed below allow you to remove old and inaccurate DNS information that may result in 404 errors. 

Windows® XP, 2000, or Vista®

1. Open the Start menu.
2. Go to Run.
   • If you do not see the Run command in Vista, search for "run" in the Search bar.
3. In the Run text box, type: ipconfig /flushdns
4. Press Enter or Return, and your cache will be flushed.

MacOS®

1. Go to Applications.
2. Go to Utilities.
3. Open the Terminal application.
4. Type: dscacheutil -flushcache
5. Press Enter or Return, and your cache will be flushed.